public class Example5_1 {
       public static void main(String args[]) {
              Student zhang = new Student();
              zhang.age = 17;              //访问继承的成员变量
              zhang.number = 100101;
              zhang.showPeopleMess();      //调用继承的方法
              zhang.tellNumber();
              int x = 9,y = 29;
              System.out.print("会做加法:");
              int result=zhang.add(x,y);
              System.out.printf("%d+%d=%d\n",x,y,result);
              UniverStudent geng = new UniverStudent();
              geng.age = 21;               //访问继承的成员变量
              geng.number = 6609;          //访问继承的成员变量
              geng.showPeopleMess();       //调用继承的方法
              geng.tellNumber();           //调用继承的方法
              System.out.print("会做加法:");
              result = geng.add(x,y);      //调用继承的方法
              System.out.printf("%d+%d=%d\n",x,y,result);
              System.out.print("会做乘法:");
              result = geng.multi(x,y);
              System.out.printf("%d*%d=%d\n",x,y,result);
       }
}
